[Jesus said: ] "But I tell you who hear me: Love your enemies, do good to those who hate you, bless those who curse you, pray for those who mistreat you. (Luke 6:27-28)
Bless those who persecute you; bless and do not curse. (Romans 12:14)
All who rely on observing the law are under a curse, for it is written: "Cursed is everyone who does not continue to do everything written in the Book of the Law." (Galatians 3:10)
Christ redeemed us from the curse of the law by becoming a curse for us, for it is written: "Cursed is everyone who is hung on a tree." (Galatians 3:13)
"If I have rejoiced at my enemy's misfortune or gloated over the trouble that came to him-- I have not allowed my mouth to sin by invoking a curse against his life-- (Job 31:30)
Do not blaspheme God or curse the ruler of your people. (Exodus 22:28)
"`Do not curse the deaf or put a stumbling block in front of the blind, but fear your God. I am the LORD (Leviticus 19:14)
Several articles examining this topic in detail are linked under the term MUBAHALA.
No longer will there be any curse. The throne of God and of the Lamb will be in the city, and his servants will serve him. (Revelation 22:3)